IBM System x3250 M4, Installation & User Manual

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Riser-card
assembly
6. Remove the adapter, if one is present, from the PCI riser-card assembly.
7. Set the adapter and PCI riser-card assembly aside.
Memory module
The following notes describe the types of dual inline memory modules (DIMMs) that
the server supports and other information that you must consider when you install
DIMMs (see “System-board internal connectors” on page 20 for the location of the
DIMM connectors):
v
To confirm that the server supports the DIMM that you are installing, see
http://www.ibm.com/systems/info/x86servers/serverproven/compat/us/.
v
The server supports only industry-standard double-data-rate 3 (DDR3), 1066,
1333 and 1600 MHz, PC3-12800 (single-rank or dual-rank), unbuffered,
synchronous dynamic random-access memory (SDRAM) dual inline memory
modules (DIMMs) with error correcting code (ECC).
v
The server supports a maximum of four single-rank or dual-rank unbuffered
DIMMs.
v The maximum operating speed of the server is determined by the slowest DIMM
in the server.
v
If you install a pair of DIMMs in DIMM connectors 1 and 3, the size and speed of
the DIMMs that you install in DIMM connectors 1 and 3 must match each other.
However, they do not have to be the same size and speed as the DIMMs that
are installed in DIMM connectors 2 and 4.
v
You can use compatible DIMMs from various manufacturers in the same pair.
v When you install or remove DIMMs, the server configuration information
changes. When you restart the server, the system displays a message that
indicates that the memory configuration has changed.
v
The specifications of a DDR3 DIMM are on a label on the DIMM, in the following
format.
ggg e Rx ff -PC3- wwwwwm - aa - bb - cc
where:
ggg is the total capacity of the DIMM (for example, 1GB, 2GB, or 4GB)
e is the number of ranks
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IBM System x3250 M4 Type 2583: Installation and User’s Guide